Pump cylinder integrated immersion liquid cooling system and precision control method thereof

Abstract

The application discloses a pump cylinder integrated immersion liquid cooling system and a precision control method thereof. The system comprises a cylinder body, a plurality of distributed hot plug magnetic pump machine modules, an impeller manifold, a fluid collaborative dynamic redundancy manifold, a multi-source cooling liquid sensing module and an intelligent coordination control module. A plurality of logical cooling partitions are formed in the cylinder body by the arrangement of heating units, and each partition corresponds to a set of split magnetic coupling magnetic pump machine modules. The intelligent coordination control module independently controls each partition pump module in a closed loop according to multi-source temperature sensing data, realizes on-demand cooling of the partitions, and when the pump machine fails, executes fluid dynamic collaborative redundancy control to maintain cooling by scheduling the flow of adjacent partitions and adjusting the load of the equipment. The application realizes precise temperature control and ultra-high energy efficiency, supports online maintenance without stopping to ensure business continuity, has good modularity and cross-scene expandability, and can be widely applied to heat dissipation management of high heat flux density scenes such as data centers and energy storage devices.

Description

Technical Field

[0001] This invention relates to the field of liquid cooling technology, specifically to an integrated pump-cylinder immersion liquid cooling system and its precision control method. In particular, it relates to a liquid cooling system that uses distributed hot-swappable magnetic pump modules combined with impeller manifolds and fluid-coordinated dynamic redundant manifolds, which can independently control the flow and temperature of multiple logical cooling zones and support online maintenance without shutdown, as well as its dynamic precision control method for one pump per zone, multiple pumps per zone, and multiple pumps in multiple zones. Background Technology

[0002] With the rapid development of industries such as artificial intelligence, high-performance computing, energy storage, and communication base stations, the power density of electronic and electrical equipment is increasing exponentially. Traditional air-cooling technology has approached its physical limits, and immersion liquid cooling, due to its extremely high heat dissipation efficiency and energy efficiency ratio, has become the mainstream solution for thermal management of high-density equipment. However, current mainstream immersion liquid cooling systems still face a series of core bottlenecks that urgently need to be addressed in terms of architecture design, control strategies, operation and maintenance, and reliability. These bottlenecks are specifically reflected in the following five aspects:

[0003] 1. Insufficient control precision and severe energy waste: Existing technologies generally follow the traditional HVAC "centralized pump control" design, which uses a single or a small number of centrally located pumps to provide circulation power for the entire liquid cooling cylinder. This crude "one pump controls the whole cylinder" approach cannot sense and respond to the real-time, differentiated heat loads of different equipment areas within the cylinder (such as different server nodes or different battery modules). To avoid overheating of local hotspots, the system has to drive the entire cooling circuit at higher power, causing the pump to be under high load for a long time, resulting in significant energy waste. The overall system power efficiency (PUE) optimization faces bottlenecks, and excessively high coolant flow rates can damage the cooled electronic components.

[0004] 2. Extremely high maintenance difficulty and business interruption risk: As the core power component of the liquid cooling system, the reliability of the pump directly affects the continuous operation of the system. In existing solutions, the pump is usually fixed to the complex piping or cylinder interior through rigid connections such as welding or threads. In the event of a failure, the entire liquid cooling system must be shut down and the coolant drained from the cylinder before repair or replacement can be performed. This process is time-consuming (up to several hours), seriously threatening the stable operation of scenarios with extremely high business continuity requirements, such as data centers and energy storage power stations. At the same time, maintenance personnel need to directly contact the coolant, posing risks of leakage, contamination, and safety.

[0005] 3. Pumps are separated from the cylinder block, resulting in system complexity and reduced efficiency: Many existing solutions separate the pumps from the cylinder block, connecting them via complex piping. This is especially true in redundant architectures using a "1+1" manual backup pump, where the piping system within a limited space is circuitous and excessively long. This leads to numerous potential leak points, and the excessively long flow paths create significant flow resistance, causing a substantial drop in coolant pressure (large pressure drop loss). This forces the pump to operate at higher power to overcome the resistance, severely reducing the system's actual cooling efficiency and energy utilization efficiency.

[0006] 4. Rigid redundancy mechanisms make it difficult to balance system availability and cost-effectiveness: To ensure reliability, existing technologies often employ simple hardware redundancy solutions. Single-pump architectures carry a fatal single point of failure risk; while the "1+1" backup pump architecture can mitigate this problem, the backup pump is only activated during a failure and remains idle otherwise, increasing hardware costs and space requirements. Furthermore, there may be cooling interruptions or fluctuations during failover, making "bumper-free switching" impossible. This rigid redundancy mechanism struggles to achieve an optimal balance between system reliability, availability, and hardware cost.

[0007] 5. Poor versatility and weak scenario adaptability: Existing immersion liquid cooling systems are mostly "island-like" solutions customized for specific server models or devices, with their cylinder structure, pump parameters, and control logic deeply coupled with the object being cooled. This makes it difficult for the system to flexibly adapt to the mixed deployment needs of different types and power consumption devices within the same cylinder, and it also makes it difficult to quickly expand to other industry scenarios such as energy storage and power electronics. Each change in application scenario requires a large amount of customized development, severely restricting the large-scale application and promotion costs of the technology.

[0008] In summary, existing immersion liquid cooling technologies have significant shortcomings in terms of precision control, ease of operation and maintenance, system energy efficiency, reliability redundancy, and versatility. Therefore, there is an urgent need in this field for an innovative immersion liquid cooling system and control method to fundamentally solve these problems and achieve high-efficiency, high-reliability, easy-to-maintain, and widely applicable immersion liquid cooling thermal management. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this invention provides an integrated pump-cylinder immersion liquid cooling system and its precision control method.

[0010] To achieve the above-mentioned objectives, the technical solution adopted by the present invention is as follows:

[0011] An integrated pump-cylinder submersible liquid cooling system includes:

[0012] A sealed cylinder 1 is provided to house multiple heating units, which are arranged in the cylinder to form multiple logical cooling zones.

[0013] The impeller bracket 4 is fixedly installed at the bottom of the sealed cylinder 1;

[0014] Multiple distributed hot-swappable magnetic pump modules are provided, with one magnetic pump module corresponding to each logical cooling partition. The magnetic pump module includes an in-cylinder impeller assembly 3 fixed on the impeller manifold 4 and an out-of-cylinder pump motor drive assembly 2 that can be plugged into and disposed outside the sealed cylinder body 1. The in-cylinder impeller assembly 3 and the out-of-cylinder pump motor drive assembly 2 are connected by magnetic coupling.

[0015] The multi-source coolant sensing module is used to collect the temperature of the heat-generating units in each logical cooling zone, as well as the coolant temperature, flow rate, and pressure at the inlet and outlet of each logical cooling zone.

[0016] The intelligent coordination control module is communicatively connected to the multi-source coolant sensing module and each of the magnetic pump modules. It is used to perform independent closed-loop control on the magnetic pump module corresponding to each logical cooling zone based on the data collected by the multi-source coolant sensing module, so as to adjust the flow rate and pressure of the coolant flowing through the corresponding heating unit.

[0017] Furthermore, the in-cylinder impeller assembly 3 includes an impeller and a magnetically coupled rotor, without external wiring; the out-of-cylinder pump motor electric drive assembly 2 includes a motor, a magnetically coupled stator, a distributed pump controller, and a blind-plug power / communication connector, and the out-of-cylinder pump motor electric drive assembly 2 is detachably mounted on the pump motor electric drive bracket 8 through the blind-plug power / communication connector.

[0018] Furthermore, the sealed cylinder 1 has no physical partitions inside, and each logical cooling zone forms a controllable fluid communication channel through the impeller manifold 4.

[0019] Furthermore, the intelligent coordination control module includes a central controller 6 and distributed pump controllers corresponding to each magnetic pump module;

[0020] The central controller 6 is used to receive and process the data from the multi-source coolant sensing module, perform heat load calculation, redundancy decision-making, and generate control commands.

[0021] The distributed pump controller is integrated into the external pump motor drive assembly 2, and is used to receive the control commands and independently adjust the speed of the motor in the corresponding magnetic pump module.

[0022] Furthermore, the system also includes a fluid-coordinated dynamic redundant manifold 13 disposed above the impeller manifold 4, which is used to cooperate with the impeller manifold 4 to achieve directional flow of coolant between logical cooling zones.

[0023] This invention also discloses a precision control method for the above-mentioned integrated pump-cylinder immersion liquid cooling system, comprising the following steps:

[0024] S1. Independent closed-loop control steps for each zone: real-time acquisition of temperature and flow data of each logical cooling zone; based on the real-time heat load of each zone, calculation and output of control signals through independent closed-loop control algorithms; independent adjustment of the operating status of the corresponding magnetic pump module in each zone.

[0025] S2. Fluid dynamic collaborative redundancy control steps: When a fault is detected in the magnetic pump module corresponding to a certain logical cooling zone, the output power of at least one adjacent logical cooling zone corresponding to the magnetic pump module is increased, and the excess coolant is guided to the faulty zone through the fluid channel between the logical cooling zones.

[0026] S3. Automatic switching steps for operating modes: Based on the overall heat load distribution of the system and the operating status of the equipment, the system automatically switches between the "one pump per zone" independent control mode, the "multiple pumps per zone" parallel reinforcement mode, and the "multiple pumps per zone" global collaborative mode.

[0027] Furthermore, S1 specifically includes:

[0028] Calculate the real-time heat load of the zone based on the temperature difference between the inlet and outlet coolant and the real-time flow rate.

[0029] Calculate the target cooling flow rate required for this zone based on the real-time heat load and the target temperature control threshold;

[0030] The deviation between the target cooling flow rate and the actual flow rate is used as the control variable, and an adaptive PID algorithm is used to adjust the speed of the corresponding magnetic pump module.

[0031] Furthermore, S2 also includes:

[0032] Load coordination adjustment steps: Reduce the workload of the heat-generating units located in the fault logic cooling zone through the device management interface.

[0033] Furthermore, the method also includes a hot-swap maintenance step:

[0034] With the system running and the sealed cylinder 1 filled with coolant, remove the faulty external pump motor drive assembly 2 and insert a new external pump motor drive assembly 2.

[0035] After the new external pump motor electric drive assembly 2 is inserted, it automatically pairs with the intelligent coordination control module and resumes controlled operation.

[0036] Furthermore, in S3, the switching triggering conditions include: the heat load of a single zone exceeds the rated cooling capacity of a single pump, the pump is in a fault state, and multiple zones are simultaneously in a high-load state.

[0037] Compared with the prior art, the advantages of the present invention are as follows:

[0038] 1. Achieving ultimate energy efficiency and significantly reducing energy consumption: Through a pioneering "one zone, one pump" distributed precision control architecture, the system can independently and in a closed loop adjust the coolant flow rate according to the real-time heat load of the equipment in each logical cooling zone, achieving "on-demand cooling." This fundamentally solves the problem of high overall energy consumption in the traditional "one pump controls the entire cylinder" mode when dealing with local hot spots. Combined with pump-cylinder integration and other designs to reduce flow resistance, the overall system power efficiency ratio (PUE) can be reduced to below 1.05, which is significantly more energy-efficient than traditional solutions.

[0039] 2. Supports uninterrupted online maintenance, ensuring high business continuity: Through an innovative split-type magnetic pump design (in-cylinder impeller assembly and out-of-cylinder pump motor electric drive assembly), the vulnerable electric drive component is placed outside the cylinder and uses a blind-plug interface. When the pump unit requires maintenance, the out-of-cylinder pump motor electric drive assembly can be directly hot-swapped and replaced without shutting down the system or draining fluid, reducing operation time to the second level. This completely solves the industry pain point of traditional solutions requiring system shutdown and fluid draining, which takes several hours, achieving zero business interruption and greatly improving system availability.

[0040] 3. Constructing cost-effective redundancy to improve system reliability: This invention proposes a unique "fluid dynamic cooperative redundancy" control method. When a single pump unit fails, the system can automatically increase the speed of adjacent zone pump units and guide excess coolant to replenish the failed zone through structures such as impeller manifolds, while simultaneously coordinating to reduce the load on equipment in the failed zone. This software redundancy mechanism based on control algorithms effectively maintains the cooling effect of the failed zone without the need for additional hardware backup pumps, eliminating the risk of single-point failure and significantly improving system reliability while optimizing costs.

[0041] 4. Integrated pump and cylinder design enhances system efficiency and reliability: The pump impeller assembly is directly integrated into the bottom of the cylinder, supplying coolant directly to the equipment above, eliminating complex external connecting pipes. This not only completely eliminates leakage points in external pipelines but also significantly shortens the flow path and reduces coolant pressure drop losses, thereby further improving the overall energy efficiency and operational reliability of the system.

[0042] 5. High modularity, versatility, and scalability: The system's cylinder block, pump assembly, and controller all adopt standardized and modular designs, allowing for flexible configuration of logical partitions and pump assembly specifications based on the number, power consumption, and type of heat-generating devices. This enables the same system to flexibly adapt to the mixed deployment and precise temperature control requirements of different scenarios such as AI servers, energy storage batteries, and power electronic devices, breaking through the limitations of traditional solutions that are highly customized and difficult to reuse, and possessing strong cross-industry application potential. Attached Figure Description

[0043] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a front perspective view of the pump-cylinder integrated immersion liquid cooling system in an embodiment of the present invention;

[0045] Figure 2 This is a structural breakdown diagram of the pump-cylinder integrated immersion liquid cooling system in an embodiment of the present invention;

[0046] Figure 3 This is a rear perspective view of the pump-cylinder integrated immersion liquid cooling system in an embodiment of the present invention;

[0047] Figure 4 This is a schematic diagram of the connection between the cylinder inlet / outlet and the CDU in an embodiment of the present invention;

[0048] Figure 5 This is a schematic diagram showing the connection between the in-cylinder impeller assembly and the external pump motor electric drive assembly in an embodiment of the present invention;

[0049] Figure 6 This is a flowchart of the precision control method for the pump-cylinder integrated immersion liquid cooling system in this embodiment of the invention. Detailed Implementation

[0050] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] Example 1: Immersion Liquid Cooling System for an 8-Node AI Server

[0052] This embodiment uses the cooling requirements of a common 8-node high-density AI server rack in a data center (maximum power consumption of 6kW per node, total power consumption of 50kW for the entire rack) as an example to illustrate the specific implementation of the present invention.

[0053] Combination Figures 1 to 4 An integrated pump-cylinder immersion liquid cooling system includes a sealed cylinder body 1, a distributed hot-swappable magnetic pump module, a multi-source coolant sensing module, and an intelligent coordination control module.

[0054] The sealed cylinder 1 is made of high-strength, corrosion-resistant material with an overall protection rating of IP67 and is filled with insulating coolant. While there are no physical partitions inside the cylinder 1, eight independent logical cooling zones are naturally formed after inserting eight AI server nodes 5 via eight pre-reserved standardized server slots. An impeller manifold 4 is fixedly installed at the bottom of the cylinder for mounting and securing the moving parts of the pump module. The cylinder 1 also features a main inlet 11, a main return outlet 10, and a safety overflow outlet 9, which connect to an external universal cooling distribution unit (CDU) 12 to form a complete cooling circulation loop. The CDU 12 is an external universal heat exchange device independent of this invention, and the system of this invention is adapted to it via the main inlet 11 and the main return outlet 10. The CDU12 supports two main heat exchange methods: one is gas-liquid heat exchange, where the hot coolant in the cylinder flows into the CDU12 from the main return port 10 and is cooled by fan airflow; the other is liquid-liquid heat exchange, where external cooling water is connected through the primary side inlet / outlet 14 on the CDU12, and the hot coolant is cooled by water cooling. The liquid-cooled cylinder block system of this invention is compatible with CDUs using both of these heat exchange methods.

[0055] There are a total of 8 distributed hot-swappable magnetic pump modules, each corresponding to one of the 8 logical cooling zones. Each pump module adopts a split magnetic coupling design, including an in-cylinder impeller assembly 3 and an external pump motor electric drive assembly 2.

[0056] The in-cylinder impeller assembly 3 is fixedly mounted in the corresponding slot on the impeller manifold 4, located at the bottom liquid inlet channel of each logical cooling zone. It includes multi-stage impellers, magnetically coupled rotors, and built-in sensors (such as flow, temperature, and pressure sensors). This assembly is completely submerged in coolant, with no external wiring or dynamic seals, fundamentally eliminating the risk of leakage.

[0057] External pump motor electric drive assembly 2: This assembly is detachably mounted on the pump motor electric drive bracket 8 outside the cylinder block 1 via a blind-plug power / communication composite connector. Internally, it integrates a brushless DC motor, a magnetically coupled stator, and a micro-distributed pump controller. (Example...) Figure 4 As shown, when the external pump motor electric drive assembly 2 is inserted into place, its magnetically coupled stator and the magnetically coupled rotor of the internal impeller assembly 3 are magnetically coupled non-contactly through the cylinder wall, thereby driving the impeller to rotate. This design allows all electrical and vulnerable components to be located outside the cylinder 1, supporting hot-swapping, reducing replacement time to less than 10 seconds, and eliminating the need for system shutdown and coolant bleeding throughout the process.

[0058] The multi-source coolant sensing module includes:

[0059] Device-level sensors: embedded in the core heat-generating components such as the CPU and GPU of each AI server node 5, and output temperature data through the BMC (Baseboard Management Controller) interface.

[0060] Zone-level sensors: Temperature, flow rate, pressure, and other sensors are installed at the inlet and outlet of each logical cooling zone to monitor the coolant status of each zone in real time.

[0061] Cylinder-level sensors: Sensors for liquid level, ambient temperature, turbidity, conductivity, etc., are installed on cylinder 1 to monitor the overall status of the system.

[0062] The intelligent coordination and control module adopts a two-layer architecture of "central coordination layer + distributed execution layer":

[0063] Central Controller 6: As the central coordination layer, it is deployed outside the cylinder block. It collects data from all sensors and the server BMC via communication buses (such as RS485, CAN), performs advanced algorithms such as global heat load calculation, redundancy decision-making, and operation mode scheduling, and sends control commands to each distributed pump controller.

[0064] Distributed pump controller: As the execution layer, it is integrated into the electric drive assembly 2 of each external pump. It receives instructions from the central controller 6 and is responsible for independent PID closed-loop control of the speed and flow of its pump module. The control cycle can reach the 1ms level, ensuring real-time and accurate response.

[0065] Node Management Controller Module 7: This module is the key out-of-band management interface connecting the liquid cooling system and the server nodes. It is responsible for collecting hardware status information (such as CPU / GPU temperature, power consumption, configuration, and logs) from the BMCs of each server node 5, and provides automated operation and maintenance capabilities such as remote IP-KVM and power control. In the liquid cooling control logic, it is the key channel for executing "load coordination adjustment" commands. When it is necessary to adjust the workload of a server node, the central controller 6 sends specific control commands to the corresponding node's BMC through this module 7.

[0066] like Figure 5 As shown, the system workflow is as follows:

[0067] 1. Initialization: Insert the server and power on the system. The central controller 6 completes its self-test, all pump modules start at minimum speed, and the coolant begins to circulate.

[0068] 2. Data Acquisition and Calculation: The central controller 6 collects data such as core temperature, inlet and outlet liquid temperature, and flow rate of each zone's equipment in real time at a period of ≤50ms, and calculates the data based on the formula... Calculate the real-time heat load for each zone (Q is the heat load, c is the specific heat capacity, ρ is the density, and q is the flow rate). (This refers to the temperature difference between the inlet and outlet liquids).

[0069] 3. Independent Closed-Loop Control for Each Zone (Standard Mode): The central controller 6 calculates the target coolant flow rate required for each zone based on the heat load and preset target temperature threshold, and sends the command to the corresponding distributed pump controller. Each pump controller adjusts the motor speed through an adaptive PID algorithm to achieve precise control of the flow rate in its zone, achieving "on-demand cooling" and high efficiency and energy saving.

[0070] 4. Fault Redundancy and Maintenance: Taking the failure of the pump in Zone 3 as an example:

[0071] Fault identification: The central controller 6 detected a sudden drop in flow and a rise in temperature in the third zone, determined that the pump was faulty, and triggered an alarm.

[0072] Fluid dynamic redundancy: The controller immediately increases the speed of the adjacent second and fourth zone pumps (e.g., by 20%) to generate excess flow. At the same time, the excess coolant is guided to the third zone for temporary replenishment through the controllable flow channel formed by the impeller manifold 4 and the fluid dynamic redundancy manifold 13 above it.

[0073] Load Coordination Adjustment: The central controller 6 sends instructions to the BMC of the AI ​​server node in the 3rd partition through the node management controller module 7, so that it can perform operations such as frequency reduction or power consumption limitation without interrupting the business, so as to actively reduce the heat load generated in the partition.

[0074] Hot-swap replacement: Maintenance personnel can directly disconnect the faulty external pump motor drive assembly 2 and insert the new assembly without shutting down the system. The new assembly will automatically complete calibration and system integration upon insertion.

[0075] Recovery: After the fault is cleared, the system automatically exits the redundant mode and restores independent closed-loop control of each partition.

[0076] This system supports automatic switching between three operating modes, as detailed below:

[0077] One pump per zone standard mode: The system's default operating mode, with each zone corresponding to a single pump for independent closed-loop control, resulting in optimal energy efficiency and suitability for typical load scenarios.

[0078] High-load / single-pump failure mode with multiple pumps in one zone: When the power consumption of a single zone device exceeds the rated cooling capacity of a single pump or a single pump fails, the system automatically schedules pumps in adjacent zones to provide collaborative support. Dual pumps or multiple pumps are connected in parallel to provide cooling for the same zone, improving the maximum cooling capacity and adapting to short-term ultra-high load scenarios.

[0079] Multi-zone, multi-pump global collaborative mode: When multiple devices in the cylinder are under high load at the same time, the system performs global flow scheduling, dynamically allocates cooling flow across zones, prioritizes the temperature control needs of high-priority devices, and adapts to the full-load operation scenario of the whole machine.

[0080] Example 2: Immersion Liquid Cooling System for Energy Storage Battery Clusters

[0081] This embodiment demonstrates an extended application of the present invention in the field of energy storage. For the thermal management requirements of a 1MWh lithium iron phosphate battery cluster, the system configuration is as follows:

[0082] The interior of the sealed cylinder 1 is divided into 6 logical cooling zones according to the layout of the battery pack, with each zone corresponding to one battery pack.

[0083] Each partition is configured with a separate hot-swappable magnetic pump module as described in Example 1.

[0084] The multi-source coolant sensing module communicates with the battery management system (BMS) to collect the temperature of key cells in each battery pack in real time.

[0085] The intelligent coordination control module adjusts the cooling strategy in real time according to the battery's charging and discharging status: during periods of high heat generation, such as fast charging, it automatically increases the speed of the corresponding zone pump group to increase the cooling flow; during periods of rest or low-current discharge, it reduces the pump speed to save energy. When a battery pack experiences an abnormal temperature, the system can immediately activate the "fluid dynamic collaborative redundancy" mechanism to schedule cooling resources from adjacent zones for rapid intervention, ensuring battery safety.

[0086] This embodiment achieves precise control of the temperature difference between cells within the battery cluster (within ±2℃), significantly improving battery cycle life and system safety. Simultaneously, the hot-swappable nature of the pump module completely solves the maintenance difficulties of liquid cooling systems in energy storage power stations, ensuring continuous 24 / 7 operation of the system.

[0087] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0088] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A pump-cylinder integrated submersible liquid cooling system, characterized in that, include: A sealed cylinder (1) is used to house multiple heating units, which are arranged in the cylinder to form multiple logical cooling zones. The impeller manifold (4) is fixedly installed at the bottom of the sealed cylinder (1); Multiple distributed hot-swappable magnetic pump modules are provided, with one magnetic pump module corresponding to each logical cooling partition; the magnetic pump module includes an in-cylinder impeller assembly (3) fixed on the impeller manifold (4) and an external pump motor drive assembly (2) detachably disposed outside the sealed cylinder body (1), the in-cylinder impeller assembly (3) and the external pump motor drive assembly (2) being connected by magnetic coupling drive; The multi-source coolant sensing module is used to collect the temperature of the heat-generating units in each logical cooling zone, as well as the coolant temperature, flow rate, and pressure at the inlet and outlet of each logical cooling zone. The intelligent coordination control module is communicatively connected to the multi-source coolant sensing module and each of the magnetic pump modules. It is used to perform independent closed-loop control on the magnetic pump module corresponding to each logical cooling zone based on the data collected by the multi-source coolant sensing module, so as to adjust the flow rate and pressure of the coolant flowing through the corresponding heating unit.

2. The integrated pump-cylinder submersible liquid cooling system according to claim 1, characterized in that, The in-cylinder impeller assembly (3) includes an impeller and a magnetically coupled rotor, without external wiring; the external pump motor electric drive assembly (2) includes a motor, a magnetically coupled stator, a distributed pump controller and a blind-plug power / communication connector, and the external pump motor electric drive assembly (2) is detachably mounted on the pump motor electric drive bracket (8) through the blind-plug power / communication connector.

3. The integrated pump-cylinder submersible liquid cooling system according to claim 1 or 2, characterized in that, The sealed cylinder (1) has no physical partitions inside, and each logical cooling zone forms a controllable fluid communication structure through the impeller manifold (4).

4. The integrated pump-cylinder submersible liquid cooling system according to claim 1, characterized in that, The intelligent coordination control module includes a central controller (6) and distributed pump controllers corresponding to each magnetic pump module. The central controller (6) is used to receive and process the data from the multi-source coolant sensing module, perform heat load calculation, redundancy decision-making and generate control commands; The distributed pump controller is integrated into the external pump motor drive assembly (2) and is used to receive the control command and independently adjust the speed of the motor in the corresponding magnetic pump module.

5. The integrated pump-cylinder submersible liquid cooling system according to claim 3, characterized in that, The system also includes a fluid-coordinated dynamic redundant manifold (13) disposed above the impeller manifold (4), which is used to cooperate with the impeller manifold (4) to achieve directional flow of coolant between logical cooling zones.

6. A precision control method for an integrated pump-cylinder submersible liquid cooling system as described in any one of claims 1-5, characterized in that, Includes the following steps: S1. Independent closed-loop control steps for each zone: real-time acquisition of temperature and flow data of each logical cooling zone; based on the real-time heat load of each zone, calculation and output of control signals through independent closed-loop control algorithms; independent adjustment of the operating status of the corresponding magnetic pump module in each zone. S2. Fluid dynamic collaborative redundancy control steps: When a fault is detected in the magnetic pump module corresponding to a certain logical cooling zone, the output power of at least one adjacent logical cooling zone corresponding to the magnetic pump module is increased, and the excess coolant is guided to the faulty zone through the fluid channel between the logical cooling zones. S3. Automatic switching steps for operating modes: Based on the overall heat load distribution of the system and the operating status of the equipment, the system automatically switches between the "one zone, one pump" independent control mode, the "one zone, multiple pumps" parallel reinforcement mode, and the "multiple zones, multiple pumps" global collaborative mode.

7. The precision control method according to claim 6, characterized in that, S1 specifically includes: Calculate the real-time heat load of the zone based on the temperature difference between the inlet and outlet coolant and the real-time flow rate. Calculate the target cooling flow rate required for this zone based on the real-time heat load and the target temperature control threshold; The deviation between the target cooling flow rate and the actual flow rate is used as the control variable, and an adaptive PID algorithm is used to adjust the speed of the corresponding magnetic pump module.

8. The precision control method according to claim 6, characterized in that, S2 further includes: Load coordination adjustment steps: Reduce the workload of the heat-generating units located in the fault logic cooling zone through the device management interface.

9. The precision control method according to claim 6, characterized in that, The method also includes a hot-swap maintenance step: With the system running and the sealed cylinder block (1) filled with coolant, pull out the faulty external pump motor drive assembly (2) and insert a new external pump motor drive assembly (2). After the new external pump motor electric drive assembly (2) is inserted, it automatically pairs with the intelligent coordination control module and resumes controlled operation.

10. The precision control method according to claim 6, characterized in that, In S3, the switching trigger conditions include: the heat load of a single zone exceeds the rated cooling capacity of a single pump, the pump is in a fault state, and multiple zones are simultaneously in a high-load state.

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